EP0688494A1 - Machine de fenaison - Google Patents

Machine de fenaison Download PDF

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Publication number
EP0688494A1
EP0688494A1 EP95201648A EP95201648A EP0688494A1 EP 0688494 A1 EP0688494 A1 EP 0688494A1 EP 95201648 A EP95201648 A EP 95201648A EP 95201648 A EP95201648 A EP 95201648A EP 0688494 A1 EP0688494 A1 EP 0688494A1
Authority
EP
European Patent Office
Prior art keywords
wheel
hay
making machine
supporting arm
extends
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95201648A
Other languages
German (de)
English (en)
Other versions
EP0688494B1 (fr
Inventor
Alfonsus Jacobus Van Den Engel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maasland NV
Original Assignee
Maasland NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maasland NV filed Critical Maasland NV
Publication of EP0688494A1 publication Critical patent/EP0688494A1/fr
Application granted granted Critical
Publication of EP0688494B1 publication Critical patent/EP0688494B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D78/00—Haymakers with tines moving with respect to the machine
    • A01D78/08—Haymakers with tines moving with respect to the machine with tine-carrying rotary heads or wheels
    • A01D78/10—Haymakers with tines moving with respect to the machine with tine-carrying rotary heads or wheels the tines rotating about a substantially vertical axis
    • A01D78/105—Ground support for rotors

Definitions

  • the present invention relates to a hay-making machine comprising a frame in which at least one processing member capable of being motor-driven is bearing-mounted, and supporting means through which the machine rests on the ground in operative position, with this support being provided with a wheel rotatable about a wheel axle, and a supporting arm extending between the wheel axle and the frame.
  • the processing members move the mowed crop lying on the ground from before the machine to therebehind.
  • the machine as viewed in the direction of travel, is adjusted such that it is leaning forward, the crop is moved not merely parallel to the ground but it is also thrown up.
  • the hay-making machine comprises a plurality of processing members which are disposed side by side and turn in the usual way in pairs from, and to each other, the crop is moved along as well as through the processing members and other parts of the machine.
  • any protruding parts of the hay-making machine are obstacles to the crop being moved past and through the machine, resulting in that a part of the crop is left on the hay-making machine.
  • the supporting means by which the machine rests on the ground at least during operation constitute obstacles, on which a relatively large amount of crop gets stuck.
  • crop accumulates between the supporting arm and the wheel in quite a harmful amount and manner. The accumulation in practice may turn out in a very dense, black coloured substance which is no longer recognizable as crop and which is also difficult to remove from the construction.
  • the invention has for his object to provide a hay-making machine of the above type in which the mentioned drawbacks do not occur or are at least reduced to a considerable extent.
  • this is achieved by a construction wherein in operative position a lower part of the supporting arm extends in a direction away from the wheel axle within a horizontal plane or in a direction with a predominant orthogonal component in said plane.
  • the crop slung against the predominantly upwardly directed part of the support arm slides downwardly until the bend by which it merges into the lower most part of the supporting arm, which is predominantly directed along the plain of the earth.
  • the crop does not slide, or slides less easily, towards the wheel axle so that the crop accumulates near the bend.
  • the fibers of the crop are, at this location of accumulation, lengthwise predominantly directed perpendicular to the side face of the wheel and are less prone to getting wound up. Therefore, the accumulation does not take place in the earlier described harmful manner. Instead it falls off the lower arm part with the help of the rubbing action of the wheel, because of unbalance of the arised pile, or because of vibrations of the machine.
  • the lower most part of the support extends horizontally or in a downward direction.
  • the support is provided with a predominantly conically shaped guard element, covering at least the major part of an extension of the wheel axle that merges into, or is connected with, the supporting arm, which guard element narrows towards the end of the wheel axle.
  • the lowermost part of the supporting arm extends from the axis of rotation to approximately the tread on the rear side of the wheel. As the highest peripheral velocity of the wheel occurs near the tread, the tangle of crop accumulated can thus be lifted off in an effective manner.
  • the wheel is provided with a pneumatic tyre and the lowermost part of the supporting arm extends to at least halfway the distance from the wheel rim to the tyre circumference.
  • the supporting arm is near its top divided into two mutually adjustable parts, by means of which the frame is adjustable in height.
  • the central part of the wheel side facing the supporting arm is protected by an at least semi-drum-shaped guard attached to the supporting arm.
  • the supporting arm extends at least partly through the wall of the drum-shaped guard.
  • the drum-shaped guard provides protection to both the wheel axle and a part of the supporting arm. Crop is left less readily on the relatively smooth drum, while the drum has also the advantage that it is of a larger diameter than the wheel axle, so that any crop will less rapidly wind round the drum.
  • the wall of the drum-shaped guard is approximately horizontal at the level of, or otherwise below the axis of rotation.
  • the drum-shaped guard element as seen from aside, extends at least partly to beyond the wheel rim.
  • the drum-shaped guard has a diameter amounting to approximately half that of a corresponding wheel.
  • FIG. 1 is a schematic representation of a rear view of a hay-making machine according to the invention, being a rotary tedder in the present case.
  • the machine comprises a frame 2 composed of a central frame part 3 and, on either side of the latter, central intermediate frame parts 4 and two outermost frame parts 5.
  • the central frame part 3 is provided with coupling means, through which the machine can be coupled to the three-point lifting hitch of a tractor.
  • the different frame parts are capable of being mutually swivelled to a limited extent, namely on swivel shafts 6 essentially extending in the direction of travel.
  • the machine comprises processing members 7 provided with tines near their periphery, by means of which tines any crop lying on the ground can be moved.
  • the processing members 7 are capable of being motor-driven on a drive shaft directed essentially upwards, and that through a transmission, accommodated in the frame 2, which is capable of being connected to the power-take-off shaft of a tractor through a coupling shaft near the centre of the machine.
  • the machine is equipped with six processing members which mutually cooperate in pairs.
  • Two central processing members 7 are each bearing-mounted near an end of the central frame part 3 in the frame.
  • a first swivel shaft 6, through which a central intermediate frame part 4 is connected to the central frame part 3 by means of a fork.
  • the frame part 4 is also provided with a processing member 7 on its outer end, while to the outer side of the bearing of this processing member in the frame, again in the manner as set forth hereinbefore, the outermost frame part 5, which is also provided with a processing member 7 near its end, is connected.
  • the machine is further provided with a hydraulic adjusting cylinder which is connected with the different frame parts in such a way that, with the aid thereof, controlled from the tractor, the machine can be put into a position for transport, in which the central intermediate frame parts are essentially directed upwards and the outermost frame parts 5 have their ends facing each other.
  • each of the frame parts is provided with a support 8 through which the machine rests on the ground.
  • a supporting member 13 in the present embodiment of the invention is designed as a wheel in the form of a pneumatic tyre 16 which is capable of being pressurized and which is fitted on a rim 15 rotatably mounted on an axle 14 whose orientation, during operation, is at least essentially transverse to the direction of travel and horizontal, while in the present embodiment this axle 14 is also part of a supporting arm 18, via which arm the supporting member 13 is connected with the frame 2.
  • the upper end 21 of a supporting arm 18 is fixed to an essentially upwardly extending journal 11 of the machine by means of a locking pin 17.
  • the distance between the supporting member 13 and the relevant processing member 7, or the height thereof with respect to the ground, is adjustable by means of an adjusting device which is provided near the upper end 21 of the supporting arm 18.
  • the adjusting device is a shaft part 20 extending parallel to the axle 14 and included in the supporting arm 18, on which shaft part 20 the upper supporting arm part 21 is capable of swivelling by means of a bush.
  • the adjustment in height between the supporting member 13 and the frame 2 takes place by means of a locking pin 24 which can be fed parallel to the shaft 20 through two lugs 22 and 23 oriented perpendicularly to the shaft 20, one of which lugs is rigidly connected with the upper arm part 21, whereas the other one is rigidly mounted on the shaft part 20.
  • a lowermost part 19 of the supporting arm 18 extends, according to the invention, from the axle 14 parallel to the side of the supporting member 13 in a downward and rearward direction, and subsequently, at approximately halfway the distance between the rim 15 and the circumference of the tyre 16, or the height of the tyre 16, it merges via a curved part 25 with a wide bend into a straight middle part 27 of the supporting arm 18.
  • the radius of the curved supporting arm part 25 is approximately equal to the aforementioned height of the pneumatic tyre, so that the straight supporting arm part, as viewed from aside, is situated "out of" the supporting member 13.
  • the middle part 27 extends predominantly in upward direction.
  • Figures 4 and 5 show a variant of the construction according to Figures 2 and 3, where, as may be seen from the cross-sectional view of Figure 5, the lowermost part of the supporting arm 18 with the supporting arm part 26 following a curve without any angular shapes merges into an axle part near the rim of the supporting member, which axle part corresponds with the axle part 14 as dealt with in the description of Figures 2 and 3.
  • a support 8 is, according to the invention, provided with guards 28.
  • these consist of plates extending vertically and in the direction of travel, or parallel to the sides of a supporting member 13.
  • Each of the plates has an essentially horizontal lower edge extending at least to underneath the axis of rotation of a supporting member 13 and preferably to near the rim of the relevant supporting member.
  • the plates 28 With an upper edge, also extending essentially in a horizontal direction, the plates 28 extend vertically, as shown in the side view according to Figure 6, to above the supporting member 13.
  • the guards 28 also extend to beyond the supporting member 13, preferably by the amount of approximately half the radius of the supporting member.
  • the guards 28 also have a vertical edge which is beyond the supporting member 13.
  • the lower edge of a guard 28 is in the form of an arc of a circle, the arrangement being such that, in the event of a change in the height adjustment of the frame 2 with respect to a supporting member 13, the guards 28 always keep tending to maintain a roughly constant distance to the ground.
  • the guards 28 are connected adjustably in height with the bottom ends of supports 29, whose top ends are connected with the bush-shaped part of the upper supporting arm part 21 by means of bolts and an intermediate block 30.
  • the supports 29 reach from their mounting positions sidewards past the supporting member 13 and that, at least on one side, in such a way that at least the lower half of a supporting arm 18 is also in between the guards 28.
  • Figure 8 shows an embodiment which principally corresponds with that of Figures 6 and 7, with the difference that here the front side and the rear side of a supporting member 13 are protected, the arrangement being such that the guard 31, as seen in a plan view, according to the present embodiment, extends essentially more or less parallel to the full outline of the supporting member 13.
  • FIG. 9 shows still another embodiment of the construction according to the invention, where the upright side of a wheel, next to which there is provided a supporting arm 18, is at least partly protected by means of a drum-shaped guard element 34.
  • this drum-shaped guard element 34 is disposed concentrically with the axis of rotation of a supporting member 13, and the element is attached to the supporting arm 18.
  • the guard element 34 extends sidewards to just beyond the supporting arm 18.
  • the diameter of the drum-shaped guard element 34 is larger than that of the rim.
  • an edge 32 on the rim 15 there is provided an edge 32, a first part of which runs parallel to the side of the supporting member 13 along the tyre 16, and a second part of which is perpendicular to the first part and encircles the drum-shaped guard element 34.
  • the drum-shaped guard element 34 is also closed on the side facing the supporting member 13 by means of a round cover plate 33 having an edge which extends to beyond the circumference of the drum-shaped guard element.
  • the protruding edge of the plate 33 is more or less a protection against the ingress of crop between the drum-shaped guard element 34 and the rim 15 of the support.
  • Figures 10 and 11 represent an alternative embodiment of the drum-shaped guard element as depicted in Figure 9.
  • the guard element 37 extends from the outermost rim circumference via an essentially conical transition in sideward direction to virtually beyond a support 18.
  • the rim may near its outer circumference be provided with a cylindrical projection 38 reaching in lateral direction to beyond the inner end of the conical guard element.
  • the conical guard element 37 comprises a U-shaped opening so that the lower arm part 19 may pass along the side of the wheel 16.
  • the view from above in Figure 11 shows that near this opening the guard element is formed so as to stretch out over the relevant part of the lower arm part 19.
  • Figures 12 and 13 also show a construction of a support 8 comprising a supporting member 13 with a supporting arm 18 bearingly mounted on the wheel axle.
  • the supporting arm 18 comprises the earlier described lower arm part with further subdivisions 19, 25 and 27, and is pivotably bearing-mounted in a bush of an upper arm part 21 through a shaft 20 placed transversely to the lower arm part 19, 25, 27.
  • the horizontal shaft 20 of the lower arm part 19, 25, 27 is axially retained, to prevent endwise sliding of the shaft in the bush, by means of the aforementioned plate 23 and a detachable quick-action locking pin 41 which is fed through the shaft 20 on the other side of the bush.
  • a plate 40 oriented vertically and in the direction of travel A is mounted against the rear side of the lower arm part 19, 25, 27.
  • This plate 40 has rounded contours.
  • the plate 40 has an upper edge part situated at a level which is higher than the wheel 16, a lower edge part extending approximately at the height of the flange of the wheel 13, and a rear edge part which, measured along a line perpendicular to a local tangent, is at least 10 cms, and preferably at least 20 cms from the rear side of the arm part 27.
  • the plate 40 extends predominantly along predominantly the length of the middle part 27 and of the curved part 25.
  • a small strip possibly forming a whole with the plate 40, is mounted in a vertical plane to the lower side of the lowermost arm part 19. In this way any tendency to winding of crop around said arm part 19 is impeded.
  • a first measure relates to the shape of the lower arm part 19, 25, 27 which in this embodiment extends rearwards and slightly downwards from the wheel axle 14 to at least beyond the rim of the wheel 16 in such a way that it is inclined at an acute angle to the horizontal plane wherein the axis 14 of the wheel 16 extends.
  • the remaining part 27 of the supporting arm 18 extends principally upwards. Any crop falling on the supporting arm 18 slides towards the wheel circumference owing to the position and shape of the lower arm part 19, 25, 27.
  • crop residues can only accumulate to a certain maximum extent, because they drag along the ground or rub against the side of the tyre 16 upon exceeding this maximum value. In both cases, the accumulated crop residues are readily put aside. Crop may also simply fall off due to unbalance of an accreted pile of crop.
  • the nature of the crop is mainly determined by the crop moistness, by the crop length, by the type of crop which determines factors such as the hairiness of the crop surface and the wax layer thereon, and by the time of harvesting: in the event of grass, a springtime crop is usually firmer than an autumn crop under the same conditions. In many cases, the time of haymaking is the most dominating factor. According to the invention, it has turned out that in general a springtime crop and a relatively short and dry crop is flung-in at a neighbouring processing member, at the front side of the machine. Here, among other things, it lands against the supporting arm 18 and the wheel 16.
  • the same effect occurs on the rear side of the machine in autumn and with a relatively long and moist crop.
  • the supporting arm 18 is placed on that side of the wheel 16 where, as it were, it is guarded against crop being thrown into the processing member.
  • the side where the arm 18 is guarded is changeable so as to adapt to springtime and autumn or to the prevailing conditions.
  • each of the lower supporting parts i.e. the wheel 16 and the lower arm part 19, 25, 27 of the supporting arm 18, in its entirety, can be exchanged with the lower arm part of a neighbouring processing member 7, depending on the circumstances. So, the supporting arm 18 is always fitted on the most favourable side of a wheel 16.
  • Figure 14 shows a rear view of the machine in a configuration including an arrangement of the supporting arms 18 which is excellently suitable for tedding a springtime crop or a relatively dry and short-stemmed crop: with two cooperating processing members, such as for instance the leftmost pair of processing members 7 depicted in Figure 14, bunches of crop are continually thrown into the outermost processing member 7 by the complementary one.
  • this is shown in a schematic representation of a plan view. So, in the view of Figure 14, the supporting arm 18 at the outermost processing member is on the left-hand side of the wheel, and the supporting arm 18 at the complementary processing member 7, the leftmost processing member but one, is on the right-hand side of the wheel 13.
  • the locking pin 17 may be embodied by a quickly removable locking element performing the same function as that of the locking element 41.
  • the entire support 18 may than positioned predominantly at the front half of a processing member 7.
  • the plate 40 then extends in front of the supporting arm 18.
  • a third contribution to the decrease in the effect of crop accretion in between supporting arm 18 and wheel 13 is made by the plate or fin 40 placed centrally on the rear side of the lower arm part 19, 25, 27, which is tubular in the present design.
  • the plate 40 is situated essentially in, or at least parallel to the imaginary plane defined by the curved arm part 19, 25, 27.
  • the plate 40 enlarges the surface area of that part of the arm 18 which projects beyond the wheel 13 in such a way that crop residues landing at the part of the arm 18 which is not protected by the wheel 13 can not wind any more round the arm 18 and, consequently, are directly diverted towards the ground.
  • the plate 40 is disposed at least against that part of the arm 18 which is out of the circumference of the wheel 13 and at least against the essentially vertically extending part hereof.
  • the plate 40 may be made of metal and may be welded against.
  • the arm 18 is provided with lips, welded or clamped thereto, to which a plate 40 is bolted. Such a construction is particularly useful when applying wood or synthetic material for the plate 40.

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Machines (AREA)
  • Soil Working Implements (AREA)
EP19950201648 1994-06-21 1995-06-19 Machine de fenaison Expired - Lifetime EP0688494B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NL9401015 1994-06-21
NL9401015 1994-06-21
NL9401501 1994-09-16
NL9401501A NL9401501A (nl) 1994-06-21 1994-09-16 Hooibouwmachine.

Publications (2)

Publication Number Publication Date
EP0688494A1 true EP0688494A1 (fr) 1995-12-27
EP0688494B1 EP0688494B1 (fr) 2002-03-27

Family

ID=26647227

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950201648 Expired - Lifetime EP0688494B1 (fr) 1994-06-21 1995-06-19 Machine de fenaison

Country Status (3)

Country Link
EP (1) EP0688494B1 (fr)
DE (1) DE69525991T2 (fr)
NL (1) NL9401501A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1006868C2 (nl) * 1997-08-28 1999-03-02 Maasland Nv Hooibouwmachine.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1632835A1 (de) * 1968-01-27 1971-01-07 Erwin Reinkens Kombinierte Heuwerbemaschine zum Wenden und Schwadenziehen
DE1757056A1 (de) * 1963-08-16 1971-06-03 Patent Concern Nv Vorrichtung zur Bearbeitung am Boden liegenden Erntegutes
DE1482049A1 (de) * 1961-10-28 1971-10-07 Masch Fabriken Gerhard Krueger Heuwerbungsmaschine
NL7314323A (nl) * 1973-10-18 1975-04-22 Lely Nv C Van Der Machine voor het verplaatsen van op de grond liggend

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1482049A1 (de) * 1961-10-28 1971-10-07 Masch Fabriken Gerhard Krueger Heuwerbungsmaschine
DE1757056A1 (de) * 1963-08-16 1971-06-03 Patent Concern Nv Vorrichtung zur Bearbeitung am Boden liegenden Erntegutes
DE1632835A1 (de) * 1968-01-27 1971-01-07 Erwin Reinkens Kombinierte Heuwerbemaschine zum Wenden und Schwadenziehen
NL7314323A (nl) * 1973-10-18 1975-04-22 Lely Nv C Van Der Machine voor het verplaatsen van op de grond liggend

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CRUCQ: "TREKKERS EN WERKTUIGEN OP DE D.L.G.", LANDBOUW MECHANISATIE, vol. 15, no. 7, WAGENINGEN NL, pages 663 - 677 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1006868C2 (nl) * 1997-08-28 1999-03-02 Maasland Nv Hooibouwmachine.
EP0898874A1 (fr) * 1997-08-28 1999-03-03 Maasland N.V. Machine de fenaison

Also Published As

Publication number Publication date
EP0688494B1 (fr) 2002-03-27
DE69525991D1 (de) 2002-05-02
NL9401501A (nl) 1996-02-01
DE69525991T2 (de) 2002-11-21

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